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  1. Join Date
    Aug 2013
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    #1
    What is the best and effective radiator coolant regardless of its price. Yung talagang makikita mo na nag improve yung temperature mo.

  2. Join Date
    Oct 2011
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    #2
    I'd stick with OEM coolant.

  3. Join Date
    Aug 2013
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    #3
    Quote Originally Posted by Retz View Post
    I'd stick with OEM coolant.
    OEM coolant? May nakita kasi ako na coolant yung "Purple Ice" di ko lang alam kung totoo toh, gusto ko pa kasi i-drop yung temp ko. Purple IceŽ - Radiator Coolant Additive - Royal Purple

  4. Join Date
    Aug 2005
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    #4
    Quote Originally Posted by phototoy_co View Post
    OEM coolant? May nakita kasi ako na coolant yung "Purple Ice" di ko lang alam kung totoo toh, gusto ko pa kasi i-drop yung temp ko. Purple IceŽ - Radiator Coolant Additive - Royal Purple
    If price is no object the best is Evans Waterless Lifetime Coolant.

    Dropping temps is not a function of your coolant, its a function of your radiator/fan/pump. But in cars its mostly your radiator.

    What's your ride and how many horses is your engine pulling?
    Last edited by EVO-V; August 23rd, 2013 at 01:41 PM.

  5. Join Date
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    #5
    the thermostat is mostly responsible for the engine's operating temperature

  6. Join Date
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    #6
    hindi ba same lang properties ng mga coolant? nagkakaiba lang ng color.

  7. Join Date
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    #7
    Quote Originally Posted by kinyo View Post
    the thermostat is mostly responsible for the engine's operating temperature
    The thermostat only closes or opens to maintain operating temp, but if for instance the radiator or fan or pump is faulty, it will keep itself open but the engine will heat up.

    Not all coolants are the same. Pretty lengthy discussion about this on its own depending on what materials are in your loop and what you use your equipment for.

  8. Join Date
    Oct 2012
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    #8
    If your engine isn't operating at optimum temperature, wouldn't it strain your engine and make it work harder? Why do you want to bring the temperature down? Is your vehicle a daily driver?

  9. Join Date
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    #9
    Quote Originally Posted by K.I.L.L. View Post
    If your engine isn't operating at optimum temperature, wouldn't it strain your engine and make it work harder? Why do you want to bring the temperature down? Is your vehicle a daily driver?
    If you overload your vehicle, in the cases of delivery fleets and reefer vans, every bit of heat exchange performance counts.

    Not a lot of room to put in a larger radiator underneath an L300 or Isuzu truck-van.

  10. Join Date
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    #10
    Quote Originally Posted by EVO-V View Post
    If you overload your vehicle, in the cases of delivery fleets and reefer vans, every bit of heat exchange performance counts.

    Not a lot of room to put in a larger radiator underneath an L300 or Isuzu truck-van.
    We actually refitted our isuzu elf with a 4be1 engine with a bigger radiator. Maluwang pa eh. New brackets for the bottom holder of the radiator lang but from 2 rows naging 5 rows na ngayon. It was consistently having overheat problems due to a small problem with the cylinder head that can't be refaced anymore. Now we don't have any more problems with overheating. Although a converted van like this one may actually have a smaller radiator to begin with.

    I use yung extended life coolant from Caltex. From what is readily available, it is bang for the buck imho since good for 5 years or 200,000kms of use for 50% dilution. It's just me though.

    But yeah, there may be better coolants out there.

  11. Join Date
    Oct 2002
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    #11
    Quote Originally Posted by EVO-V View Post
    The thermostat only closes or opens to maintain operating temp, but if for instance the radiator or fan or pump is faulty, it will keep itself open but the engine will heat up.
    true ... in a normally functioning cooling system, the thermostat dictates the operating temperature ... so if the TS wants to lower his temperature, he needs to change his thermostat with lower "opening temperature", not his coolant

  12. Join Date
    Feb 2008
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    #12
    i was told na ok din daw Shell coolant. i dont know if totoo nga ba.

    anyway, for our L300 vans, we just use stock rad size.

  13. Join Date
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    #13
    Quote Originally Posted by kinyo View Post
    true ... in a normally functioning cooling system, the thermostat dictates the operating temperature ... so if the TS wants to lower his temperature, he needs to change his thermostat with lower "opening temperature", not his coolant
    Thermostats work using either a wax compound or a bi-metallic mechanism that reacts to temperature. Special alloys and formulations have been done for customized thermostats and its normally to defer opening rather than accelerate it. So unless you're in bed with someone who makes those mechanisms its highly unlikely to happen.

    What you want to happen to get maximum overall cooling is to disengage the thermostat, upgrade your radiator, change your fan to one with a more aggressive blade geometry, and if its crank driven -change the pulley ratio. If the fan has a viscous clutch just engage it on high and keep it there (at the expense of power and economy).

    The shell coolants are fine, nothing remarkable, they work, however 1-2 years you'll need to refill them depending on usage as the inhibitors lose efficacy around that time.

    Avoid coolants that use an organic acid based inhibitor if you have a mixed metal loop (copper-brass radiator + aluminum engine + steel linings.

  14. Join Date
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    #14
    Quote Originally Posted by crazy_boy View Post
    i was told na ok din daw Shell coolant. i dont know if totoo nga ba.

    anyway, for our L300 vans, we just use stock rad size.
    If you just do normal deliveries, even overloading the trusty L300 mule, is fine as long as you accelerate gradually. Just watch your tires.

    Its when reefers (refrigeration) conversions come in with oversized compressors for transporting say ice cream, that cooling systems are put to the test.

    Imagine in traffic you may need to rev higher to keep things cooler. Then haul all that weight.
    Last edited by EVO-V; August 23rd, 2013 at 11:35 PM.

  15. Join Date
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    #15
    Quote Originally Posted by phototoy_co View Post
    OEM coolant? May nakita kasi ako na coolant yung "Purple Ice" di ko lang alam kung totoo toh, gusto ko pa kasi i-drop yung temp ko. Purple IceŽ - Radiator Coolant Additive - Royal Purple
    effective kaya ito? parang gusto ko ding subukan, san kaya meron nito?

  16. Join Date
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    #16
    If I remember purple ice and what it does, it essentially breaks the surface tension of water/coolant making it more conductive simply because it allows more molecules to come into contact with heat transfer point.

    I do remember it smelling rather terrible too.

  17. Join Date
    Mar 2013
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    #17
    Mga sirs, anung pwedeng coolant for 2002 starex?

    Sent from my GT-I9505 using Tapatalk 4

  18. Join Date
    Jun 2006
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    #18
    You should also check if your radiator's fins are clean.

  19. Join Date
    Dec 2009
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    912
    #19
    Guys ask ko lang. 40k na yung takbo ng 2011 mitsubishi adventure ko. nalagay sa manual palit na ng coolant pag 40k na. nung pina check ko ok pa daw yung coolant ko. puno pa yung sa reserved tas nung binuksan ko yung sa radiator puno din at kulay green pa.. Tingin nyo palitan ko na ba dahil yun ang nakalagay sa manual or di muna kc ok pa naman sya? thanks!

  20. Join Date
    Jul 2008
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    #20
    Hi guys,

    Since napag-uusapan ang pag-lower ng temperature...

    OK ba yung mga aftermarket na thermostat na nakalagay ay opening temperature is 70C? Matibay kaya ang mga ito? Tsaka yung mga radiator caps na 1.3 bars mas maganda bang gamitin yun kaysa sa OEM radiator caps? Any pros and cons?

    TnX...
    Last edited by erick_214; August 24th, 2013 at 05:22 AM.

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Best and effective radiator coolant